Rachel Harris, PhD, a psychologist, is author of Listening to Ayahuasca: New Hope for Depression, Addictions, PTSD, and Anxiety.

Paul Levy is author of The Madness of George W. Bush: A Reflection of Our Collective Psychosis, Dispelling Wetiko: Breaking the Curse of Evil, Awakened By Darkness: When Evil Becomes Your Father, and The Quantum Revelation: A Radical Synthesis of Science and Spirituality. He has been a Tibetan Buddhist practitioner for the past three decades. [...]